Paper-coating machine



June 26, '1928.

C. O. THORNE PAPER COATING MACHINE gnoentoz Filed April 14, 1923- 2 Sheets-Sheet l (/0/6/76'? 0 7/70'fl/7e June 26, 1928.

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I Patented June 26,1928.

UNITED" STATES PATENT OFFICE.

cmmmon o. THORNE, or WATEBVLIET, MIcIIIeAN, ASSIGIIOR or ONE-HALF 'ro PHILIP e. BALTZ, or CHICAGO, ILLINOIS.

PAPER-COATING MAonINE.

Application filed April 14, 1923. Serial No. 632,008.

This invention relates to improvements in paper coating machines.

The main object of this invention is to provide an improved coating machine adapted for applying a coating ofditlerent colors to one side of a web of paper, the embodiment illustrated being designed for the applying of two colors. \4

Further objects, and objects relating to structural details, will definitely appear from the detailed-description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clear- 3 1y defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

I Fi I is a ers ective v1ew of m img P P .V

proved coating machine, partsbeing illustrated in full lines and parts in dotted lines for convenience and clearness in ill ust-ra tion.

Fig. II is a vertical longitudinal section of my improved coating machine, only the parts more particularly related to. my improvements being illustrated.

Fig. III isa fragmentary plan view of certain of the parts shown in Fig. II.

In the drawing similar reference characters refer to similar parts.

(Referring to the drawing, I have illus trated only the front end of my improved coating machine and various operating and driving parts are shown by dotted lines in order to show the general relation of the parts of a machine of the type to which my invention is particularly adapted. I will not, however, describe the driving means for the various parts as suitable mechanisms for the purpose are well known in the art and I do not deem the same to be necessary to an understanding of my improvements. 45 At the front of the machine I provide a pair of coating pans 1 disposed end to end. The coating feed rollers 2 are disposed to dip into these pans, as shown in Fig. II, these rollers being also mounted end to end preferably on a common shaft 3. Above the rollers and supported to receive thecoating therefrom are the rotary coating brushes 4. These brushes are also disposed end to end and preferably on a common shaft 5.

Above the brushes is a drum 6 over which the paper to be coated 7 is passed, the roll of paper Sbeing suitably supported and the paper passed over the guide roller 9 to the coating drum, the coating brushes 4 applying the coating thereto as the paper is carried around the drum.

The vertical partition wall 10 is arranged between the coating feed rollers 2 and the rotary coating brushes 4. so as to prevent the spattering of the coating from the brushes on the pog'tion of the web of paper coated w1th another color and into the other pan, the main purpose of this invention bemg to provide means for applyingcoating' of different colors, as indicated in Fig. III. At the rear of the drum is a conveyor apron 11 supported by the rollers 12, at least one of which is a driven roller, the paper passing from the drum 6 on to this apron 1 The scrubber brushes 13 are arranged to act upon thepaper as it passes. over the drum 6. These brushes are arranged in pairs end to end, there being a space between the inner ends of the brushes, as illustrated in Fig. I. These'brushes are carried .b the reciprocating bars 14, a cam means nated generally by the numeral 15 being provided for reciprocating the bars. However, as the details of this driving means for the bars form'no part of this invention, I have not illustrated the same herein. The

space between the inner ends ot the brushes.

is such that their strokes donot overlap.

A series of finishing brushes 16 are proesigvided to act upon the paper as it travels over the apron. These brushes are also arranged end to end in spaced relation, the bristles being of proper character to provide the finish.

M improved coatingmachine efiectively applies colored coatings to a web or paper, it being intended in practice that first one side shall be treated and then the other, the

reversal of the web of paper resulting in the colored coating being applied so that they occupy the same relation with the web either side up which is of advantage in printing,

particularly in the class of printing known as work and turn, that is, where a sheet is passed through the press and then reversed and printed on the other side.

My improved machine is especially designed by me for the manufacture of paper made the subject matter of an application in which I am a joint inventor with Philip G. Baltz and filed April 14, 1923, Serial No. 632,162 Patent No. 1,481,529..1

I have illustrated and described my improvements in a very practical embddiment. I have not attempted to illustrate or describe-various modifications and adaptations which might be desirable or necessary in the application of my improvements to other types of coating machines as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as may be desired.

Having thus describedmy invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination in a paper coating machine, of a plurality of coating pans disposed end to end, feed rolls disposed end to end in operative relation to said pans, rotary coating brushes disposed end to end and operatively associated with said feed rolls, there being a partition wall between said feed rolls and coating brushes, a paper drum operatively associated with said coating brushes, an apron disposed at the rear of said drum, and scrubber and finishing brushes operatively associated with said drum and apron respectively, said brushes being disposed end to end in spaced relation and mounted for longitudinal reciprocatory movement, the spaces between the ends of the brushes being greater than the stroke of the brushes so that their operation is confined to the area ofthe paper to which the coating is applied by one of said a coating brushes.

2.- The combination in a paper coating machine, of a plurality of coating pans disposed end to end, feedrolls disposed end to end in operative relatlon to said pans, rotary coating brushes disposed end to end and "operatively associated with said feed which the coating is applied by one of said coatin brushes.

3. T e combination in a paper coating machine, of a plurality of coating pans disposed end to end, feed rolls disposed end to end and in operative relation to said pans, rotary coating brushes disposed end to end and feed rolls, there being a partition yvall between said feed rolls and coating brushes, a paper supporting drum, and reciprocating brushes disposed end to end in spaced relation and operatively associated with said drum, the spaces between the ends of the brushes being greater than the stroke of the brushes so that their operation is confined to the area of the paper to which the coating is applied by one of said coating brushes.

4. The combination in a paper coating machine, ofa plurality of coating pans disposed end to end, feed rolls disposed end to,

end and in operative, relation to said pans, rotary coating brushes disposed end to end 'and operatively associated with said feed rolls, a paper supporting drum, and reciprocating brushes disposed end to end in spaced relation and operatively associated operatively associated with said.

with said drum, the spaces between the ends I of the brushes being greater than the stroke of the brushes so that their operation is confined to the area of the paper to which the coating is applied by one of said coating brushes.

5. The combination in a paper coating machine, of a plurality of coating pans disposed end to end, feed rolls disposed end-to end and in operative relation to said pans,

and'rotary coating brushes disposed endto end and. operatively associated with said feed rolls, there being a partition wall between said feed rolls and coating brushes.

6. In a paper coating machine, the combination with means forcarrying a Web of paper through the machine, and means for simultaneously applying coating material of different colors to different portions of one side thereof as the web is advanced, comprising coating brushes disposed end to end,.

and means for supplying coating material to said brushes, there being a partition wall between said brushes.

In witness whereof, I have hereunto set 

